CN113126260B - High definition imaging lens and camera device - Google Patents
High definition imaging lens and camera device Download PDFInfo
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- CN113126260B CN113126260B CN202110483952.3A CN202110483952A CN113126260B CN 113126260 B CN113126260 B CN 113126260B CN 202110483952 A CN202110483952 A CN 202110483952A CN 113126260 B CN113126260 B CN 113126260B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
Abstract
The invention discloses a high-definition imaging lens and a camera device, which comprise: the first lens is provided with an object side surface and an image side surface which are respectively a convex surface and a concave surface at paraxial positions; the image side surface of the second lens is a convex surface at the paraxial part; the surface of the image side of the third lens is a concave surface at the paraxial part; the object side surface and the image side surface of the fourth lens are respectively a convex surface and a concave surface at the paraxial part; the object side surface and the image side surface of the fifth lens are respectively concave and convex at paraxial parts; the object side surface and the image side surface of the sixth lens are respectively convex and concave at the paraxial region. The focal length of the high-definition imaging lens and the focal length of the first lens satisfy the following relational expression: f1/f is more than 0.8 and less than 2.0. According to the invention, the six lenses are sequentially arranged on the optical axis at intervals, different refractive powers and concave-convex surfaces are distributed for the lenses, and the focal length of the lens positioned at the front end is adjusted, so that high-quality imaging is realized, and meanwhile, the high-definition imaging lens is miniaturized, and has a good market prospect.
Description
Technical Field
The invention relates to the technical field of optical imaging, in particular to a high-definition imaging lens and a camera device.
Background
With the rapid development of electronic technologies, portable electronic devices, such as smart phones, tablet computers, automobile data recorders, and motion cameras, are rapidly becoming popular, and most of these electronic devices are equipped with cameras to provide a photographing function.
Although the volume of the electronic device tends to be miniaturized, the requirement of the user on the photographic imaging effect is higher and higher, and the lens applied in the traditional electronic device is a five-lens type lens, so that the imaging quality is difficult to meet the requirement of the current market on the imaging effect. How to realize the imaging effect of a professional camera in common electronic equipment becomes a technical problem to be solved urgently by technical personnel in the field.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a high-definition imaging lens and a camera device, and solves the problem that the imaging quality of a lens in the traditional electronic equipment in the prior art is difficult to meet the requirement of the current market on the imaging effect.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a high-definition imaging lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens which are sequentially arranged from an object side to an image side along an optical axis, wherein each of the surfaces from the object side surface of the first lens to the image side surface of the sixth lens is an aspheric surface;
the first lens element with positive refractive power has a convex object-side surface and a concave image-side surface;
the second lens element with positive refractive power has a convex image-side surface at paraxial region;
the third lens element with negative refractive power has a concave image-side surface at paraxial region;
the fourth lens element with positive refractive power has a convex object-side surface and a concave image-side surface;
the fifth lens element with positive refractive power has an object-side surface being concave and an image-side surface being convex;
the sixth lens element with negative refractive power has a convex object-side surface and a concave image-side surface;
the first lens, the second lens and the fourth lens are made of the same material, and the refractive index of the first lens, the refractive index of the second lens and the refractive index of the fourth lens are all lower than 1.6;
the high-definition imaging lens meets the following relational expression:
0.8＜f1/f＜2.0；
wherein f represents the focal length of the high-definition imaging lens, and f1 represents the focal length of the first lens.
Optionally, the high-definition imaging lens satisfies the following relation:
0.0＜f6/f3＜2.5；
wherein f3 denotes a focal length of the third lens, and f6 denotes a focal length of the sixth lens.
Optionally, the high-definition imaging lens satisfies the following relation:
0.5＜R12/f1＜3.5；
wherein R12 denotes a radius of curvature of the image-side surface of the second lens, and f1 denotes a focal length of the first lens.
Optionally, the high-definition imaging lens satisfies the following relation:
0.5＜f5/|(R51+R52)|＜3.0；
where f5 denotes a focal length of the fifth lens, R51 denotes a radius of curvature of the object-side surface of the fifth lens, and R52 denotes a radius of curvature of the image-side surface of the fifth lens.
Optionally, the high-definition imaging lens satisfies the following relation:
1.0＜(R11+R12)/f＜4.0；
wherein R11 denotes a radius of curvature of the object-side surface of the first lens, R12 denotes a radius of curvature of the image-side surface of the second lens, and f denotes a focal length of the high-definition imaging lens.
Optionally, the high-definition imaging lens satisfies the following relation:
6.0＜(CT1+CT2)/T12＜9.0；
wherein CT1 represents the thickness of the central optical axis of the first lens, CT2 represents the thickness of the central optical axis of the second lens, and T12 represents the distance of the central optical axis between the first and second lenses.
Optionally, the high-definition imaging lens satisfies the following relation:
1.0＜CT3/T34+CT4/T45＜3.0；
wherein CT3 represents the thickness of the central optical axis of the third lens, CT4 represents the thickness of the central optical axis of the fourth lens, T34 represents the distance of the central optical axis between the third lens and the fourth lens, and T45 represents the distance of the central optical axis between the fourth lens and the fifth lens.
Optionally, the high-definition imaging lens satisfies the following relation:
1.0＜TTL/ΣCT＜3.0；
wherein, TTL represents the optical total length of the high-definition imaging lens, and Sigma CT represents the distance between the central optical axes of all the lenses.
Optionally, the high-definition imaging lens satisfies the following relation:
0.8＜TTL/ImgH＜2.0；
0.5＜ImgH×Fno/f＜2.5；
wherein, TTL represents the total optical length of the high-definition imaging lens, ImgH represents a half of a diagonal length of an effective pixel area on an imaging surface of the high-definition imaging lens, and Fno represents an aperture value of the high-definition imaging lens.
The invention also provides a camera device which comprises the high-definition imaging lens.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a high-definition imaging lens and a camera device, wherein six lenses are sequentially arranged on an optical axis at intervals, different refractive powers and concave-convex surfaces are distributed for the lenses, and the focal length of the lens positioned at the front end is adjusted, so that high-quality imaging is realized, the high-definition imaging lens is miniaturized, and the high-definition imaging lens has good market prospect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic diagram illustrating a high definition imaging lens according to a first embodiment of the present invention;
fig. 2 is a graph illustrating astigmatism and distortion curves of a high-definition imaging lens according to an embodiment of the invention;
fig. 3 is a spherical aberration curve diagram of a high-definition imaging lens according to a first embodiment of the present invention;
fig. 4 is a schematic diagram illustrating a high-definition imaging lens according to a second embodiment of the present invention;
fig. 5 is a graph illustrating astigmatism and distortion curves of a high-definition imaging lens according to a second embodiment of the invention in order from left to right;
fig. 6 is a spherical aberration curve diagram of a high-definition imaging lens according to a second embodiment of the present invention;
fig. 7 is a schematic diagram illustrating a high-definition imaging lens according to a third embodiment of the present invention;
fig. 8 is a graph illustrating astigmatism and distortion curves of a high-definition imaging lens according to a third embodiment of the invention in order from left to right;
fig. 9 is a spherical aberration curve diagram of a high-definition imaging lens according to a third embodiment of the present invention.
In the above figures: a first lens: 110. 210, 310; an object-side surface: 111. 211, 311; image-side surface: 112. 212, 312;
a second lens: 120. 220, 320; image-side surface: 122. 222, 322;
a third lens: 130. 230, 330; image-side surface: 132. 232, 332;
a fourth lens: 140. 240, 340; object-side surface: 141. 241, 341; image-side surface: 142. 242, 342;
a fifth lens: 150. 250, 350; an object-side surface: 151. 251, 351; image-side surface: 152. 252, 352;
a sixth lens: 160. 260, 360; object side surfaces 161, 261, 361; image-side surface: 162. 262, 362;
an infrared filter: 170. 270, 370;
diaphragm: 101. 201, 301;
f: the focal length of the high-definition imaging lens; f 1: a focal length of the first lens; f 3: a focal length of the third lens; f 5: a focal length of the fifth lens; f 6: a focal length of the sixth lens; r11: a radius of curvature of the first lens object-side surface; r12: a radius of curvature of an image-side surface of the second lens; r51: a radius of curvature of the object-side surface of the fifth lens; r52: a radius of curvature of an image-side surface of the fifth lens element; CT 1: a thickness of a central optical axis of the first lens; CT2 thickness of the central optical axis of the second lens; CT 3: the thickness of the central optical axis of the third lens; CT 4: the thickness of the central optical axis of the fourth lens; t12: a distance of a central optical axis between the first lens and the second lens; t34: the distance between the central optical axes of the third lens and the fourth lens; t45: the distance between the central optical axes of the fourth lens and the fifth lens; sigma CT, the distance between the central optical axes of the lenses; ImgH: half of the diagonal length of an effective pixel area on an imaging surface of the high-definition imaging lens; TTL: the optical total length of the high-definition imaging lens; fno: and f, aperture value of the high-definition imaging lens.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
The invention provides a high-definition imaging lens which comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens which are sequentially arranged from an object side to an image side along an optical axis, wherein all surfaces from the object side surface of the first lens to the image side surface of the sixth lens are aspheric. The high-definition imaging lens further comprises an imaging surface which is positioned at the image side and used for imaging a shot object, and an infrared filter which is arranged between the sixth lens and the imaging surface, wherein the infrared filter does not influence the focal length of the high-definition imaging lens.
The first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens do not move relatively on the optical axis, and any two adjacent lenses of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens can have a space on the optical axis, so that the assembly of the lenses is facilitated, and the manufacturing yield is improved.
The first lens element with positive refractive power has a convex object-side surface and a concave image-side surface; the second lens element with positive refractive power has a convex image-side surface at paraxial region; the third lens element with negative refractive power has a concave image-side surface at paraxial region; the fourth lens element with positive refractive power has a convex object-side surface and a concave image-side surface; the fifth lens element with positive refractive power has an object-side surface being concave and an image-side surface being convex; the sixth lens element with negative refractive power has a convex object-side surface and a concave image-side surface. Through the positive and negative distribution of the focal power of each lens in the reasonable control high definition imaging lens, the low order aberration of the high definition imaging lens can be effectively balanced and controlled, the tolerance sensitivity of the high definition imaging lens can be reduced, and the miniaturization of the high definition imaging lens is guaranteed.
Specifically, the first lens, the second lens and the fourth lens are all made of the same material and are all made of plastic, and the refractive index of each lens is lower than 1.6.
Further, the high-definition imaging lens meets the following relational expression: f1/f is more than 0.8 and less than 2.0; where f denotes a focal length of the high-definition imaging lens, and f1 denotes a focal length of the first lens. The imaging angle of the high-definition imaging lens is increased by satisfying the above relational expression, so that the high-definition imaging lens group achieves the effect of framing in a large-angle range, meanwhile, the high-definition imaging lens group can moderately bear the refracting power of the high-definition imaging lens, and the assembly sensitivity of the high-definition imaging lens is reduced.
Further, the high-definition imaging lens satisfies the following relation: f6/f3 is more than 0.0 and less than 2.5; where f3 denotes a focal length of the third lens, and f6 denotes a focal length of the sixth lens. By reasonably controlling the ratio of f6 to f3, the amount of spherical aberration contribution of the sixth lens and the third lens is controlled within a reasonable range, and the imaging quality of the high-definition imaging lens in an on-axis field area is improved.
Further, the high-definition imaging lens meets the following relational expression: r12/f1 is more than 0.5 and less than 3.5; where R12 denotes a radius of curvature of the image-side surface of the second lens, and f1 denotes a focal length of the first lens. The high-definition imaging lens has a good differential correction effect by reasonably adjusting the ratio of the surface shape of the image side surface of the first lens to the focal length of the first lens.
Further, the high-definition imaging lens meets the following relational expression: 0.5 < f5/| (R51+ R52) | < 3.0; where f5 denotes a focal length of the fifth lens, R51 denotes a radius of curvature of the object-side surface of the fifth lens, and R52 denotes a radius of curvature of the image-side surface of the fifth lens. The relationship between the surface shapes and the focal lengths of the object side surface and the image side surface of the fifth lens element is adjusted by using the above conditions, so that the effect of adjusting the refractive index of the rear section of the lens is achieved, the total length of the lens is reduced, the resolution is improved, and the lens has good optical performance.
Further, the high-definition imaging lens meets the following relational expression: 1.0 < (R11+ R12)/f < 4.0; where R11 denotes a radius of curvature of the object-side surface of the first lens, R12 denotes a radius of curvature of the image-side surface of the second lens, and f denotes a focal length of the high-definition imaging lens. By specifying the shape of the first lens according to this conditional expression, it is possible to reduce the degree of beam deflection and thus reduce aberration.
Further, the high-definition imaging lens meets the following relational expression: 6.0 < (CT1+ CT2)/T12 < 9.0; where CT1 denotes the thickness of the central optical axis of the first lens, CT2 denotes the thickness of the central optical axis of the second lens, and T12 denotes the distance of the central optical axis between the first lens and the second lens. Through the thickness of rational configuration first lens and second lens and the air space between the two, be favorable to reducing high definition imaging lens's sensitivity, promote high definition imaging lens imaging quality, keep high definition imaging lens's miniaturization simultaneously.
Further, the high-definition imaging lens meets the following relational expression: 1.0 < CT3/T34+ CT4/T45 < 3.0;
where CT3 denotes a thickness of a central optical axis of the third lens, CT4 denotes a thickness of a central optical axis of the fourth lens, T34 denotes a distance of the central optical axis between the third lens and the fourth lens, and T45 denotes a distance of the central optical axis between the fourth lens and the fifth lens. Through the reasonable thickness of the third lens, the air space between the third lens and the fourth lens, the thickness of the fourth lens and the air space between the fourth lens and the fifth lens, the structure of the high-definition imaging lens is more compact, and meanwhile, the axial chromatic aberration of the high-definition imaging lens is favorably corrected.
Further, the high-definition imaging lens meets the following relational expression: TTL/sigma CT is more than 1.0 and less than 3.0; wherein, TTL represents the optical total length of the high-definition imaging lens, and Sigma CT represents the distance between the central optical axes of the lenses. The distance between the central optical axes of the lenses is reasonably adjusted by utilizing the relational expression, so that the assembly of the lenses is facilitated, and the manufacturing yield is improved.
Further, the high-definition imaging lens satisfies the following relation: TTL/ImgH is more than 0.8 and less than 2.0; wherein, TTL represents the optical total length of the high-definition imaging lens, and ImgH represents half of the diagonal length of the effective pixel area on the imaging surface of the high-definition imaging lens; when TTL/ImgH satisfies the above relational expression, a high-definition imaging effect can be realized.
Further, the high-definition imaging lens meets the following relational expression: imgH multiplied by Fno/f is more than 0.5 and less than 2.5; wherein, Fno represents the aperture value of the high-definition imaging lens. When the condition is satisfied, the photosensitive surface with the oversized size is favorably realized, the imaging efficiency is effectively improved, and the camera lens group has the characteristic of large aperture.
Example one
Referring to fig. 1 to 3, fig. 1 is a schematic diagram illustrating a high definition imaging lens according to a first embodiment of the invention, fig. 2 is graphs of astigmatism and distortion of the high definition imaging lens according to the first embodiment of the invention in order from left to right, and fig. 3 is a graph of spherical aberration of the high definition imaging lens according to the first embodiment of the invention.
As shown in fig. 1, the high-definition imaging lens includes, in order from an object side to an image side along an optical axis, a first lens element 110, a second lens element 120, a third lens element 130, a fourth lens element 140, a fifth lens element 150, and a sixth lens element 160, wherein each of surfaces of an object-side surface 111 of the first lens element 110 to an image-side surface 162 of the sixth lens element 160 is aspheric. The high-definition imaging lens further includes an imaging surface located at the image side for imaging the object, and an infrared filter 170 disposed between the sixth lens element 160 and the imaging surface, wherein the infrared filter 170 does not affect the focal length of the high-definition imaging lens.
In addition, in the high-definition imaging lens, the diaphragm 101 is arranged in front, that is, the diaphragm 101 is positioned between the object and the first lens 110, so that the Exit Pupil (Exit Pupil) of the high-definition imaging lens can generate a longer distance from the imaging surface, the high-definition imaging lens has a Telecentric (telecentricity) effect, and the efficiency of receiving images by a CCD or a CMOS of an electronic photosensitive element can be increased.
The first lens element 110, the second lens element 120, the third lens element 130, the fourth lens element 140, the fifth lens element 150 and the sixth lens element 160 do not move relatively to each other on the optical axis, and any two adjacent lens elements among the first lens element 110, the second lens element 120, the third lens element 130, the fourth lens element 140, the fifth lens element 150 and the sixth lens element 160 may have a space on the optical axis, which is beneficial to the assembly of the lens elements and improves the manufacturing yield.
The first lens element 110 with positive refractive power has a convex object-side surface 111 and a concave image-side surface 112; the second lens element 120 with positive refractive power has a convex image-side surface 122 at a paraxial region; the third lens element 130 with negative refractive power has a concave image-side surface 132 at the paraxial region; the fourth lens element 140 with positive refractive power has a convex object-side surface 141 and a concave image-side surface 142; the fifth lens element 150 with positive refractive power has an object-side surface 151 being concave and an image-side surface 152 being convex; the sixth lens element 160 with negative refractive power has a convex object-side surface 161 and a concave image-side surface 162. Through the positive and negative distribution of the focal power of each lens in the reasonable control high definition imaging lens, the low order aberration of the high definition imaging lens can be effectively balanced and controlled, the tolerance sensitivity of the high definition imaging lens can be reduced, and the miniaturization of the high definition imaging lens is guaranteed.
Specifically, the first lens 110, the second lens 120 and the fourth lens 140 are all made of the same material, are all made of plastic, and the refractive index of each lens is lower than 1.6.
Please refer to the following tables 1-1, 1-2 and 1-3.
Table 1-1 shows detailed configuration data of an embodiment, wherein the unit of the radius of curvature, the thickness and the focal length is millimeter, f is the focal length of the high-definition imaging lens, Fno is the aperture value, HFOV is half of the maximum field angle, and surfaces 0 to 17 sequentially represent surfaces from the object side to the image side, wherein surfaces 2 to 14 sequentially represent the surfaces of the stop 101 to the image side surface 162 of the sixth lens element.
Table 1-2 shows aspheric coefficient data in the first embodiment, wherein k represents cone coefficients in aspheric curve equations, a4, a6, A8, a10, a12, a14, and a16, and represents aspheric coefficients of orders 4, 6, 8, 10, 12, 14, and 16 of each surface.
Tables 1 to 3 show the conditions satisfied by the high definition imaging lens in the first embodiment.
In addition, the following tables of the embodiments correspond to the schematic diagrams and graphs of the embodiments, and the definitions of the data in the tables are the same as those in tables 1-1, tables 1-2 and tables 1-3 of the first embodiment, which are not repeated herein.
Example two
Referring to fig. 4 to 6, fig. 4 is a schematic diagram illustrating a high-definition imaging lens according to a second embodiment of the invention, fig. 5 is graphs of astigmatism and distortion of the high-definition imaging lens according to the second embodiment of the invention in order from left to right, and fig. 6 is a graph of spherical aberration of the high-definition imaging lens according to the second embodiment of the invention.
As shown in fig. 4, the high definition imaging lens assembly includes, in order from an object side to an image side along an optical axis, a first lens element 210, a second lens element 220, a third lens element 230, a fourth lens element 240, a fifth lens element 250 and a sixth lens element 260, wherein surfaces of an object side surface 211 of the first lens element 210 and an image side surface 262 of the sixth lens element 260 are aspheric. The high-definition imaging lens further includes an imaging surface located at the image side for imaging the object, and an infrared filter 270 disposed between the sixth lens element 260 and the imaging surface, where the infrared filter 270 does not affect the focal length of the high-definition imaging lens.
In addition, in the high-definition imaging lens, the diaphragm 201 is arranged in front, that is, the diaphragm 201 is positioned between the object and the first lens 210, so that the Exit Pupil (Exit Pupil) of the high-definition imaging lens can generate a longer distance from the imaging surface, the high-definition imaging lens has a Telecentric (telecentricity) effect, and the efficiency of receiving images by a CCD or a CMOS of an electronic photosensitive element can be increased.
The first lens element 210, the second lens element 220, the third lens element 230, the fourth lens element 240, the fifth lens element 250 and the sixth lens element 260 do not move relatively to each other on the optical axis, and any two adjacent lens elements among the first lens element 210, the second lens element 220, the third lens element 230, the fourth lens element 240, the fifth lens element 250 and the sixth lens element 260 may have a space on the optical axis, which is beneficial to the assembly of the lens elements and improves the manufacturing yield.
The first lens element 210 with positive refractive power has a convex object-side surface 211 and a concave image-side surface 212; the second lens element 220 with positive refractive power has a convex image-side surface 222 at a paraxial region; the third lens element 230 with negative refractive power has a concave image-side surface 232 at the paraxial region; the fourth lens element 240 with positive refractive power has a convex object-side surface 241 and a concave image-side surface 242; the fifth lens element 250 with positive refractive power has a concave object-side surface 251 and a convex image-side surface 252; the sixth lens element 260 with negative refractive power has a convex object-side surface 261 and a concave image-side surface 262. Through the positive and negative distribution of the focal power of each lens in the reasonable control high definition imaging lens, the low order aberration of the high definition imaging lens can be effectively balanced and controlled, the tolerance sensitivity of the high definition imaging lens can be reduced, and the miniaturization of the high definition imaging lens is guaranteed.
Specifically, the first lens 210, the second lens 220 and the fourth lens 240 are all made of the same material, all are made of plastic, and the refractive index of each lens is lower than 1.6.
Please refer to the following Table 2-1, Table 2-2 and Table 2-3.
EXAMPLE III
Referring to fig. 7 to 9, fig. 7 is a schematic diagram illustrating a high-definition imaging lens according to a third embodiment of the invention, fig. 8 is graphs of astigmatism and distortion of the high-definition imaging lens according to the third embodiment of the invention in order from left to right, and fig. 9 is a graph of spherical aberration of the high-definition imaging lens according to the third embodiment of the invention.
In fig. 7, the high definition imaging lens includes, in order from an object side to an image side along an optical axis, a first lens element 310, a second lens element 320, a third lens element 330, a fourth lens element 340, a fifth lens element 350 and a sixth lens element 360, wherein each of surfaces of an object side surface 311 of the first lens element 310 and an image side surface 362 of the sixth lens element 360 is aspheric. The high-definition imaging lens further includes an imaging surface located at the image side for imaging the object, and an infrared filter 370 disposed between the sixth lens element 360 and the imaging surface, wherein the infrared filter 370 does not affect the focal length of the high-definition imaging lens.
In addition, in the high-definition imaging lens, the diaphragm 301 is arranged in front, that is, the diaphragm 301 is located between the object and the first lens 310, so that the Exit Pupil (Exit Pupil) of the high-definition imaging lens can generate a longer distance from the imaging surface, the high-definition imaging lens has a Telecentric (telecentricity) effect, and the efficiency of receiving images by a CCD or a CMOS of an electronic photosensitive element can be increased.
The first lens element 310, the second lens element 320, the third lens element 330, the fourth lens element 340, the fifth lens element 350 and the sixth lens element 360 do not move relatively to each other on the optical axis, and any two adjacent lens elements among the first lens element 310, the second lens element 320, the third lens element 330, the fourth lens element 340, the fifth lens element 350 and the sixth lens element 360 can have a space on the optical axis, which is beneficial to the assembly of the lens elements and improves the manufacturing yield.
The first lens element 310 with positive refractive power has a convex object-side surface 311 and a concave image-side surface 312; the second lens element 320 with positive refractive power has a convex image-side surface 322 at a paraxial region; the third lens element 330 with negative refractive power has a concave image-side surface 332 at the paraxial region; the fourth lens element 340 with positive refractive power has a convex object-side surface 341 and a concave image-side surface 342; the fifth lens element 350 with positive refractive power has an object-side surface 351 being concave in a paraxial region thereof and an image-side surface 352 being convex in the paraxial region thereof; the sixth lens element 360 with negative refractive power has a convex object-side surface 361 and a concave image-side surface 362. Through the positive and negative distribution of the focal power of each lens in the reasonable control high definition imaging lens, the low order aberration of the high definition imaging lens can be effectively balanced and controlled, the tolerance sensitivity of the high definition imaging lens can be reduced, and the miniaturization of the high definition imaging lens is guaranteed.
Specifically, the first lens 310, the second lens 320 and the fourth lens 340 are all made of the same material, all are made of plastic, and the refractive index of each lens is lower than 1.6.
Please refer to the following Table 3-1, Table 3-2 and Table 3-3.
Example four
The embodiment of the invention provides a camera device which comprises the high-definition imaging lens in any embodiment.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. The high-definition imaging lens is characterized by comprising a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens which are sequentially arranged from an object side to an image side along an optical axis, wherein the surfaces of the object side surface of the first lens to the image side surface of the sixth lens are aspheric;
the first lens element with positive refractive power has a convex object-side surface and a concave image-side surface;
the second lens element with positive refractive power has a convex image-side surface at paraxial region;
the third lens element with negative refractive power has a concave image-side surface at paraxial region;
the fourth lens element with positive refractive power has a convex object-side surface and a concave image-side surface;
the fifth lens element with positive refractive power has an object-side surface being concave and an image-side surface being convex;
the sixth lens element with negative refractive power has a convex object-side surface and a concave image-side surface;
the high-definition imaging lens meets the following relational expression:
0.8＜f1/f＜1.08；
1.22＜f6/f3＜2.5；
wherein f denotes a focal length of the high-definition imaging lens, f1 denotes a focal length of the first lens, f3 denotes a focal length of the third lens, and f6 denotes a focal length of the sixth lens.
2. The high-definition imaging lens as claimed in claim 1, wherein the high-definition imaging lens satisfies the following relation:
0.5＜R12/f1＜3.5；
wherein R12 denotes a radius of curvature of the image-side surface of the second lens, and f1 denotes a focal length of the first lens.
3. The high-definition imaging lens as claimed in claim 1, wherein the high-definition imaging lens satisfies the following relation:
0.5＜f5/|(R51+R52)|＜3.0；
where f5 denotes a focal length of the fifth lens, R51 denotes a radius of curvature of the object-side surface of the fifth lens, and R52 denotes a radius of curvature of the image-side surface of the fifth lens.
4. The high-definition imaging lens as claimed in claim 1, wherein the high-definition imaging lens satisfies the following relation:
1.0＜(R11+R12)/f＜4.0；
wherein R11 denotes a radius of curvature of the object-side surface of the first lens, R12 denotes a radius of curvature of the image-side surface of the second lens, and f denotes a focal length of the high-definition imaging lens.
5. The high-definition imaging lens as claimed in claim 1, wherein the high-definition imaging lens satisfies the following relation:
6.0＜(CT1+CT2)/T12＜9.0；
wherein CT1 represents the thickness of the central optical axis of the first lens, CT2 represents the thickness of the central optical axis of the second lens, and T12 represents the distance of the central optical axis between the first and second lenses.
6. The high-definition imaging lens as claimed in claim 1, wherein the high-definition imaging lens satisfies the following relation:
1.0＜CT3/T34+CT4/T45＜3.0；
wherein CT3 represents the thickness of the central optical axis of the third lens, CT4 represents the thickness of the central optical axis of the fourth lens, T34 represents the distance of the central optical axis between the third lens and the fourth lens, and T45 represents the distance of the central optical axis between the fourth lens and the fifth lens.
7. The high-definition imaging lens as claimed in claim 1, wherein the high-definition imaging lens satisfies the following relation:
1.0＜TTL/ΣCT＜3.0；
wherein, TTL represents the optical total length of the high-definition imaging lens, and Sigma CT represents the distance between the central optical axes of the lenses.
8. The high-definition imaging lens as claimed in claim 1, wherein the high-definition imaging lens satisfies the following relation:
0.8＜TTL/ImgH＜2.0；
0.5＜ImgH×Fno/f＜2.5；
wherein, TTL represents the total optical length of the high-definition imaging lens, ImgH represents a half of a diagonal length of an effective pixel area on an imaging surface of the high-definition imaging lens, and Fno represents an aperture value of the high-definition imaging lens.
9. An image pickup apparatus comprising the high definition imaging lens according to any one of claims 1 to 8.
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| CN104133283A (en) * | 2012-09-14 | 2014-11-05 | 三星电机株式会社 | Imaging lens |
| CN107092079A (en) * | 2014-08-29 | 2017-08-25 | 大立光电股份有限公司 | Image capturing lens system and image capturing device |
| CN112698477A (en) * | 2020-12-29 | 2021-04-23 | 诚瑞光学(苏州)有限公司 | Image pickup optical lens |
| CN112698482A (en) * | 2020-12-29 | 2021-04-23 | 诚瑞光学(苏州)有限公司 | Image pickup optical lens |
| CN112904540A (en) * | 2019-12-03 | 2021-06-04 | 康达智株式会社 | Camera lens |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103676089B (en) * | 2013-08-29 | 2016-01-20 | 玉晶光电(厦门)有限公司 | Optical imaging lens and apply the electronic installation of this optical imaging lens |
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|---|---|---|---|---|
| CN104133283A (en) * | 2012-09-14 | 2014-11-05 | 三星电机株式会社 | Imaging lens |
| CN103777321A (en) * | 2013-09-06 | 2014-05-07 | 玉晶光电(厦门)有限公司 | Portable electronic device and optical imaging lens thereof |
| CN107092079A (en) * | 2014-08-29 | 2017-08-25 | 大立光电股份有限公司 | Image capturing lens system and image capturing device |
| CN112904540A (en) * | 2019-12-03 | 2021-06-04 | 康达智株式会社 | Camera lens |
| CN112698477A (en) * | 2020-12-29 | 2021-04-23 | 诚瑞光学(苏州)有限公司 | Image pickup optical lens |
| CN112698482A (en) * | 2020-12-29 | 2021-04-23 | 诚瑞光学(苏州)有限公司 | Image pickup optical lens |
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